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Old 05-21-2020, 09:31 AM   #1
dev310per
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LVM's backup


Today I've learned about LVM. This feature looks good, but I wonder, can I combine it with RAID 5/6?
I mean, I can backup the data by snapshots or mirroring, but I see it like losing a lot of space.
 
Old 05-21-2020, 09:42 AM   #2
berndbausch
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LVM has RAID 5 and 6 built-in. You can also create LVM physical volumes on top of software or hardware RAID devices.

RAID is not the same as a backup, though. It's a high-availability solution: When a disk breaks, the RAID continues running. It doesn't help you when you delete a file by accident.
Snapshots are the opposite: They help when you lose a file, but they don't protect you in the case of disk failures.

Last edited by berndbausch; 05-21-2020 at 09:44 AM.
 
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